Ordered 4 cells 280ah From Shenzhen Basen, CN

[Oldtoad]

Ordered 9/6/2020 from Shenzhen Basen, CN via Alibaba.com
Payment processed in Delaware
Estimated delivery time 30-35 working days
Fedex Tracking # received 9/9/2020, estimated delivery 9/16/2020 from Hawthorne, CA
Will post how it goes

 

[Oldtoad]

Received power supply.
Ordered load tester as suggested on https://www.mobile-solarpower.com/ Also reordered pure sine wave inverter, first order cancelled due to backlog. BMS has shipped.
Trying to get ready to charge and test as soon as reasonably possible.

 

[Oldtoad]

Received BMS from Overkill Solar today.
Very neat assembly, impressive guarantee.
Thanks Steve.

 

[Oldtoad]

Received inverter and load tester.
Thinking about buss bars.
Anticipation....

 

[Gazoo]

What did you decide on for an inverter? It's possible my cells are on the same boat as yours.

 

[WvSkiBum]

Which Load Tester did you go with? I had not ordered one of those, and I need to order buss bars as well. Also ordered the 280Ah on the slow boat.

 

[Oldtoad]

First choice was Aims w/ 2 yr warranty but they were back-ordered.
AIG 18 month warranty https://smile.amazon.com/gp/product/B07T2GNHQM/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
Load tester: https://smile.amazon.com/gp/product/B07F3NHHST/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
Please lemme know if you disagree with my choices and why....
This is an exciting endeavor.

 

[Gazoo]

Thanks. The high cut off of the inverter is 16V±0.5VDC and the low cut off is 9.8V. It's my understanding the inverter is supposed to be the first line of defense against too high or low voltage. In your case the BMS will be acting as the first line of defense. I think you will be ok as long as you stay within the knees of the cells. Something along the lines of 12 to 14 volts. Someone please correct me if I am wrong.

Programmable inverters are costly. This will be an exciting endeavor for me too.

 

[Oldtoad]

Cells arrived in USA 6 Oct.
Fedex received package 10 Oct at Carson, California.
Patiently waiting. Must be ready to test cells upon arrival and inspection.

 

[MadMax03]

Can I start the drum roll yet?

 

[Oldtoad]

Batteries are circling Boston a bit before heading up the road to Maine.
Being told Fedex does not rush a quality delivery.
Have time for a cup of tea or two.

 

[MadMax03]

Splendid!

 

[Oldtoad]

 

[MadMax03]

 

[Oldtoad]

View attachment 25365View attachment 25365

 

[Oldtoad]

All cells 3.29-3.30V using my free Harbor Freight multimeter.
While they equilibrate to Maine going to scrounge a piece of copper to give them a chance to come to the same voltage before charging and testing.
All cells unpacked in good condition, happy boy!

 

[Oldtoad]

This is more like it

 

[MadMax03]

Better than Christmas! 3.30 and 3.29? Nice. I put in the same exact order Saturday. $400 shipped. What did you steal yours for?

 

[Oldtoad]

Think it was $421.
Good for you.

 

[MadMax03]

You going to do a capacity test? Curious what we get out of our "280ah" batts..